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Cooler Master case · Cooler Master MasterBox
Cooler Master MasterBox Q300L
Target Price
£59.31
- Lowest
- £20.75
- 25th percentile
- £41.35
- Median
- £59.31
- 75th percentile
- £75.50
- Highest
- £92.33
- Sales used
- 6
- Window
- 90 days
- Latest sale
- 3 Sept
- Outliers excluded
- 0
| If you are listing | Price, postage included | Against recent sales |
|---|---|---|
| Quick sale | £41.35 | Cheaper than three in four sales |
| Typical | £59.31 | Middle of the sales |
| Ambitious | £75.50 | Dearer than three in four sales |
The Target Price is the median of 6 UK sales of working used units in the last 90 days, item plus postage. The most recent sale was 3 Sept 2026.
For sellers: A MasterBox Q300L listed at £59.31 including postage sits in the middle of what buyers paid over the last 90 days. Above £75.50 it is dearer than three in four recent sales.
For buyers: A listing at £41.35 or below has undercut three in four recent sales. Paying more than £75.50 puts you above three in four recent buyers.
Cheapest new
No UK retailer is listing this part new at the moment.
3-month move
Needs 3+ sales both 60–90 days ago and in the last 30 days.
Current MasterBox Q300L listings on eBay UKPrice history
Weekly median of accepted UK sales, last 12 months.
The line joins weeks with 3 or more sales. Hollow squares are weeks with fewer. Faint dots are individual sales, and the bars count sales per week. Fewer than two weeks here have enough sales, so no line is drawn.
Show as table
| Week of | Median | Sales |
|---|---|---|
| 20 Jul 2026 | £60.85 | 2 |
| 27 Jul 2026 | £82.76 | 2 |
| 17 Aug 2026 | £20.75 | 1 |
| 31 Aug 2026 | £39.99 | 1 |
Recent UK sales
The latest of 6 accepted sales on record. Bundles, faulty cards, laptops, boxes and other models are excluded.
| Photo | Sold | Listing title | Price inc. postage |
|---|---|---|---|
 | 3 Sept | Cooler Master MasterBox Q300L Black MicroATX Mini Tower Case MCB-Q300L-KANN-S00 | £39.99 |
 | 21 Aug | Cooler Master MasterBox Q300L Mini Tower Case - Black | £20.75 |
 | 28 Jul | Cooler Master MasterBox Q300L V2 Mini Tower Case - Black | £73.18 |
 | 27 Jul | MasterBox Q300L mATX PC Case w/ Magnetic Design Dust Filter Transparent Acrylic | £92.33 |
 | 24 Jul | COOLER MASTER MasterBox Q300L Micro-ATX and Mini-ITX PC Computer Case Compact | £76.27 |
 | 20 Jul | Cooler Master MasterBox Q300L Black MicroATX Mini Tower Case MCB-Q300L-KANN-S00 | £45.43 |